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Finding the Fourth Proportional to 12,274.92, 16,939.08 and 7,171.29

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Solution

The fourth proportional to 12,274.92, 16,939.08 and 7,171.29 is: 9,896.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,274.92 : 16,939.08 = 7,171.29 : x
  2. Step 2: Convert to fraction form
    12,274.92/16,939.08 = 7,171.29/x
  3. Step 3: Cross multiply
    12,274.92x = 16,939.08 × 7,171.29
  4. Step 4: Simplify right side
    12,274.92x = 121,475,055.01
  5. Step 5: Solve for x
    x = 121,475,055.01/12,274.92
  6. Step 6: Final answer
    x = 9,896.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.